Preparation method of ceramic tube for explosionproof fuse for automobile

A manufacturing method and fuse technology, which is applied in the field of automotive lighting equipment, can solve problems such as poor heat insulation and toughness, damage to surrounding circuits, and environmental pollution, and achieve the effect of low expansion coefficient

Active Publication Date: 2014-12-17
湖南省新化县长江电子有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the a-Al 2 o 3 Porcelain tubes for explosion-proof fuses have an expansion coefficient of about 6.7 to 8.0, poor heat insulation and toughness, and cannot meet the requirements of circuit environments with large operating currents.
When the fuse is blown, the instantaneous current is very large, especially when the fuse is blown due to the short circuit of the load. If the porcelain tube cannot be insulated or cracked when the fuse is blown, it will cause damage to the surrounding circuit or pollute the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a porcelain tube for an automobile explosion-proof fuse, the porcelain tube is made of ceramic materials with the following components,

[0037] Cordierite 82.0~88.0wt%,

[0038] Phosphorus trioxide 3.00~6.00wt%,

[0039] Strontium carbonate 2.00~3.00wt%,

[0040] Titanium dioxide 3.00~6.00wt%,

[0041] Yttrium oxide 0~2.00wt%,

[0042] Silica 1.00~3.00wt%.

[0043] Among them, the chemical formula of cordierite is 2MgO·2Al 2 o 3 ·5SiO2 2 , the porcelain tube uses cordierite as the basic material; the chemical formula of phosphorus trioxide is P 2 o 3 , the chemical formula of strontium carbonate is SrCO 3 , the chemical formula of titanium dioxide is TiO 2 , the chemical formula of yttrium oxide is Y 2 o 3 , the chemical formula of silicon dioxide is SiO 2 , Phosphorus trioxide, strontium carbonate, titanium dioxide, yttrium oxide and silicon dioxide are auxiliary materials for the porcelain tube.

Embodiment 2

[0045] This embodiment provides a porcelain tube for automobile explosion-proof fuse, which is made of ceramic materials with the following components: 82.0wt% cordierite, 6.00wt% phosphorus trioxide, 2.00wt% strontium carbonate, 5.00 wt% titanium dioxide, 2.00 wt% yttrium oxide and 3.00 wt% silica.

Embodiment 3

[0047] This embodiment provides a porcelain tube for an automobile explosion-proof fuse, which is made of ceramic materials with the following components: 83.0wt% cordierite, 5.00wt% phosphorus trioxide, 3.00wt% strontium carbonate, 6.00 wt% titanium dioxide, 1.00 wt% yttrium oxide and 2.00 wt% silica.

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Abstract

The invention discloses a ceramic tube for an explosionproof fuse for an automobile. The ceramic tube is prepared from ceramic materials comprising the following components in percentage by weight: 82.0-88.0wt% of cordierite, 3.00-6.00wt% of phosphorus trioxide, 2.00-3.00wt% of strontium carbonate, 3.00-6.00wt% of titanium dioxide, 0-2.00wt% of yttrium oxide and 1.00-3.00wt% of silicon dioxide. The invention further discloses a preparation method of the ceramic tube for the explosionproof fuse for the automobile. The ceramic tube for the explosionproof fuse for the automobile based on the ceramic material with cordierite as a principal crystalline phase has very low expansion coefficient so as to realize an anti-cracking effect. Meanwhile, pollution to around circuits and electronic elements by heat generated by the blown fuse can be prevented.

Description

technical field [0001] The invention relates to the technical field of automobile lighting equipment, in particular to a method for manufacturing a porcelain tube for an automobile explosion-proof fuse. Background technique [0002] With the rapid development of the automobile industry, while pursuing comfort and ease of handling, safety, energy saving and environmental protection are also being paid more and more attention. Many parts in automobiles need to be installed with explosion-proof fuses, especially in LED lamps, an insulating tube needs to be set outside these explosion-proof fuses. Currently, these insulating bushings are usually made of a-Al 2 o 3 Made of ceramics as the main crystal phase. [0003] a-Al 2 o 3 The chemical bonds in ceramics are ionic bonds and covalent bonds. For ionic bonds, once the interatomic distance increases due to thermal expansion, the Coulomb force will be significantly reduced and the potential energy will be significantly incre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/622C04B35/195
Inventor 曾正春
Owner 湖南省新化县长江电子有限责任公司
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